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My MBP's LCD Screen was broken. So I purchased a new LCD Screen for A1278 device.
After putting connecting all the cables back to where they were. I decided to turn on the MBP and test the new screen.
The screen is black with no backlight/brightness. I can actually see Apple logo, logon screen and everything by putting a bright light over the screen. Everything is operational except it has no light.
Any kind of help is greatly appreciated.
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You should have a LED-backlit TFT active-matrix "glossy" display (not an LCD) - which means the controller chip or connector on the logic board is bad. Try an SMC reset.
I would talk with your vendor about why the displays backlight is not working.... examine the cable and connector for burn marks/poor connection.
If you have not connected to an external display do so. If you see no image there you have a bad VGU/VGC or logic board issue. Of course a good image points back to an internal display link problem which is controller chip, connector, cable or LCD screen.
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Dude, stop copying and pasting! If you don't have the clue, or haven't dealt with just stop talking in increments. It's so annoying when mammals step in with minimum familiarity. People are searching for help and good advice, not for your poppycock.
I found that information to be very helpful. ^^^^^
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